package com.ithei.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ithei.reggie.common.R;
import com.ithei.reggie.dto.DishDto;
import com.ithei.reggie.entity.Category;
import com.ithei.reggie.entity.Dish;
import com.ithei.reggie.entity.DishFlavor;
import com.ithei.reggie.service.CategoryService;
import com.ithei.reggie.service.DishFlavorService;
import com.ithei.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){

        //构造分页构造器
        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //构造条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(name!=null ,Dish::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝 records是全部数据的总结，不拷贝这个
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        //获得全部数据的集合
        List<Dish> records = pageInfo.getRecords();
        //item是dish里边的属性，相当与把dish的普通属性+菜品分类名称赋值给新的records
        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            //拷贝普通属性
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }


            return dishDto;
        }).collect(Collectors.toList());

        //再把list赋值给records
        dishDtoPage.setRecords(list);

        return  R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param ids
     * @return
     */
    @GetMapping("/{ids}")
    public R<DishDto> get(@PathVariable Long ids){
        //两张表，需要在service里重写别的方法
        DishDto dishDto = dishService.getByIdWithFlavor(ids);

        return R.success(dishDto);
    }

    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    /**
     * 根据id获得status对菜品进行状态改变
     * 可以单个或者批量
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable Integer status ,@RequestParam List<Long> ids){
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.in(ids!=null,Dish::getId,ids);
        List<Dish> list = dishService.list(queryWrapper);
        for (Dish dish : list) {
            if (dish != null){
                dish.setStatus(status);
                dishService.updateById(dish);

            }

        }
        return  R.success("修改成功");

    }

    /**
     * 根据id删除菜品和对应的口味
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids){
        log.info("ids: {}",ids);
        dishService.removeWithDish(ids);
        return R.success("删除成功");
    }


    /**
     * 根据条件查询菜品的数据    下拉框
     * @param dish
     * @return
     */
   /* @GetMapping("/list")
    public R<List<Dish>> list(Dish dish){
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId()!=null, Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1（起售）的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        return R.success(list);
    }*/
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId()!=null, Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1（起售）的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            //拷贝普通属性
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            //SQL: select * from dish_flavor where dish_id = ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);

            dishDto.setFlavors(dishFlavorList);


            return dishDto;
        }).collect(Collectors.toList());



        return R.success(dishDtoList);
    }


}
